The average fee per transaction on Ethereum reached $6.04 Wednesday night, according to Blockchair, the highest fees since 2015.
Median transaction fees, which have stayed just below historic highs of $3.03, currently sit at $3.00.
Fees hovered below $1 until mid-July when transaction fees started to soar.
Fee increases coincide with surging activity on popular decentralized financial protocols like Uniswap.
At least three similar decentralized finance applications are included on a list of protocols with the highest levels of network utilization, curated by Etherscan.
While Ethereum developers have toyed with numerous technical options to reduce fees by scaling the network's transaction capacity, a possible fix remains months away.